CN105478492A - Determination method for monitoring points of rolling mill rolling parameters and arrangement structure for rolling mill rolling parameter measuring device for method - Google Patents
Determination method for monitoring points of rolling mill rolling parameters and arrangement structure for rolling mill rolling parameter measuring device for method Download PDFInfo
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- CN105478492A CN105478492A CN201410479176.XA CN201410479176A CN105478492A CN 105478492 A CN105478492 A CN 105478492A CN 201410479176 A CN201410479176 A CN 201410479176A CN 105478492 A CN105478492 A CN 105478492A
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Abstract
The invention provides a determination method for monitoring points of rolling mill rolling parameters and an arrangement structure for a rolling mill rolling parameter measuring device for the method. The method comprises the steps that 1, an acceleration sensor and the rolling parameter measuring device are arranged in different positions of a rolling mill at first; and 2, impact factors of the rolling parameters are calculated according to collected data under different passes, and thus the sensitivity size of the rolling parameters is calculated, so that the monitoring points of the rolling mill rolling parameters are rapidly and accurately determined. According to the determination method for the monitoring points of the rolling mill rolling parameters and the arrangement structure for the rolling mill rolling parameter measuring device for the method, other monitoring points of the rolling parameters of the rolling mill except vibration acceleration signals can be rapidly and accurately determined; the rolling force and the rolling speed of a twenty-high rolling mill can be accurately measured, and the set angle of a measuring device for the rolling force and the set angle of a measuring device for the rolling speed are further determined; the measuring accuracy of the rolling force and the rolling speed can be further improved; on the premise that the performance and production of the rolling mill are not affected, on-line precise monitoring on rolling mill vibration is achieved, signals of rolling mill operational states are provided, and normal operation of the rolling mill is ensured.
Description
Technical field
The present invention relates to a kind of rolling mill vibration monitoring method, particularly relate to a kind of for the mill milling parameter monitoring measuring point defining method of mill and the arrangement of mill data measurement mechanism thereof.
Background technology
Milling train there will be and vibrates frequently in the operation of rolling, and the vibration of how accurately to monitor milling train is worldwide technical barrier always.The vibration problem of milling train, not only make the mechanical performance of milling train and precision be had a strong impact on, and strong rolling mill vibration can have a strong impact on the surface quality of product, bring tremendous economic to lose to enterprise.Because rolling machine system has the many vibration sources of multi-parameter, in order to eliminate other parameter perturbation in rolling mill vibration observation process, obtain more accurate signal, the layout of Sensor is particularly important.
Usually the mode that vibration acceleration signal is analyzed is adopted in rolling mill vibration observation process.In order to more accurately reflect the Vibration Condition of milling train, the vibration monitoring of milling train also can be realized in conjunction with other rolling parameters.But the Sensor cloth that at present great majority research mainly concentrates on four rollers and six-high cluster mill is set up, due to mill complicated structure and required precision is higher, the Sensor of four rollers or six-high cluster mill is arranged and cannot be applicable to mill.
Through looking into, the existing patent No. is the Chinese patent " a kind of rolling mill vibration device for monitoring and analyzing " of CN201220396620.8, this device is by milling train twisting vibration, the signal transducer of the real-time seizure of flexural vibrations and linearly coupled signal, for amplifying collection signal and the multi-channel Vibration Signal isolated amplifier of conversion process, for carrying out the multi-channel Vibration Signal conditioner of filtering process to signal, for carrying out data analysis to the received signal, monitoring computer and for the database that stores data with for providing the voltage-stabilized power supply of power supply to form; Wherein, be arranged on the described signal transducer on milling train and described multi-channel Vibration Signal isolated amplifier data cube computation, described multi-channel Vibration Signal isolated amplifier and described multi-channel Vibration Signal conditioner data cube computation, described multi-channel Vibration Signal conditioner is connected with described computer data, and described computer is connected with described database data; Described voltage-stabilized power supply provides power supply for described multi-channel Vibration Signal isolated amplifier, multi-channel Vibration Signal conditioner and monitoring computer.But this is a monitoring device just, does not determine and arranges to be described to the position of Sensor, therefore need to develop a kind of method determined Sensor and arrange, to obtain accurate signal to monitor the vibration of milling train.
Summary of the invention
First technical problem to be solved by this invention is to provide a kind of defining method of mill milling parameter monitoring measuring point, fast and accurately can determine the monitoring measuring point of other rolling parameters of milling train except vibration acceleration signal.
Second technical problem to be solved by this invention is to provide a kind of arrangement of mill data measurement mechanism, can measure roll-force and the mill speed of mill exactly.
The present invention solves the technical scheme that above-mentioned first technical problem adopt: a kind of defining method of mill milling parameter monitoring measuring point, is characterized in that comprising the following steps:
1) degree of will speed up sensor and rolling parameter measurement mechanism are arranged on the diverse location of milling train, wherein this rolling parameter measurement mechanism is other rolling parameters for measuring except this vibration acceleration signal, comprises the parameter of speed or roll-force signal;
2) vibration acceleration signal under the different passage of acceleration transducer difference multi collect, rolling parameter measurement mechanism gathers the rolling parameter under different passage;
3) the fluctuation percentage of vibration acceleration signal root-mean-square value is calculated by the data of above-mentioned collection
wherein x
mthe root-mean-square value of vibration acceleration signal under expression m passage, x
nunder expression n passage, the root-mean-square value of vibration acceleration signal, calculates the fluctuation percentage of rolling parameter simultaneously
wherein y
mrepresent the rolling parameter under m passage, y
nrepresent the rolling parameter under n passage, wherein m, n are the integer being greater than zero;
4) factor of influence of rolling parameter is calculated
if Φ is >0, then represent that the root-mean-square value of this vibration acceleration signal is comparatively responsive to the fluctuation of this rolling parameter, factor of influence Φ numerical value is larger, and the susceptibility of this rolling parameter is higher; If Φ is <0, then represent that the fluctuation of the root-mean-square value of this vibration acceleration signal to this rolling parameter is insensitive;
5) according to the susceptibility size being arranged on the rolling parameter that the rolling parameter measurement mechanism on milling train diverse location collects, the monitoring measuring point of mill milling parameter as the arrangement of this rolling parameter measurement mechanism, thus is determined in the milling train position selecting the higher mill data of susceptibility corresponding.
The present invention solves the technical scheme that above-mentioned second technical problem adopt: a kind of arrangement of mill data measurement mechanism, the roller system of milling train is divided into the first half and the latter half of being oppositely arranged, described the first half and the latter half are all disposed with working roll system from the inside to the outside, intermediate calender rolls system, driven roller system and backing roll system, wherein working roll is a working roll, intermediate calender rolls is two intermediate calender rolls, driven roller is two driven rollers and an idler rollers, backing roll is four backing rolls, it is characterized in that: described mill milling parameter monitoring measurement mechanism comprises measurement of rolling force device and mill speed measurement mechanism, wherein measurement of rolling force device is arranged on the memorial archway of the first backing roll of the first half rightmost side of roller system of rolling mill, mill speed measurement mechanism is arranged on the bearing block of the 5th backing roll of the latter half rightmost side of roller system of rolling mill.
As improvement, the horizontal sextant angle of the line at the center of the first backing roll of described measurement of rolling force device and the first half rightmost side is 36 ~ 38 °, and the horizontal sextant angle of the line at the center of the 5th backing roll of mill speed measurement mechanism and the latter half rightmost side is 89 ~ 91 °.
As preferably, the horizontal sextant angle of the line at the center of the first backing roll of described measurement of rolling force device and the first half rightmost side is 37 °, and the horizontal sextant angle of the line at the center of the 5th backing roll of mill speed measurement mechanism and the latter half rightmost side is 90 °.
As improvement, on the memorial archway of the first half that described measurement of rolling force device and mill speed measurement mechanism also can be arranged on roller system of rolling mill simultaneously second backing roll from left to right.
Improve, the horizontal sextant angle of described measurement of rolling force device and mill speed measurement mechanism and the first half line at the center of second backing roll is from left to right 89 ~ 91 ° again.The determination of angle is set, further increases the certainty of measurement of roll-force and mill speed.
Preferably, the horizontal sextant angle of described measurement of rolling force device and mill speed measurement mechanism and the first half line at the center of second backing roll is from left to right 90 °.
Compared with prior art, the invention has the advantages that: the present invention fast and accurately can determine the monitoring measuring point of other rolling parameters of milling train except vibration acceleration signal, roll-force and the mill speed of mill can be measured exactly, and determine further to arrange angle to measurement of rolling force device and mill speed measurement mechanism, the certainty of measurement of roll-force and mill speed can be improved further, under the prerequisite not affecting rolling mill characteristic and production, realize the online precise monitoring to rolling mill vibration, milling train operation conditions signal is provided, ensure the normal operation of milling train.
Accompanying drawing explanation
Fig. 1 is the flow chart of mill milling parameter monitoring measuring point defining method of the present invention;
Fig. 2 is the front view of the mill being furnished with measurement of rolling force device and mill speed measurement mechanism in the present invention;
Fig. 3 is the sectional view along arrow 1-1 in Fig. 2;
Fig. 4 is the sectional view along arrow 3-3 in Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figure 1, a kind of defining method of mill milling parameter monitoring measuring point, comprises the following steps:
1, degree of will speed up sensor and rolling parameter measurement mechanism are arranged on the diverse location of milling train, and wherein this rolling parameter measurement mechanism is for measuring other rolling parameters except this vibration acceleration signal, comprises the parameter of speed or roll-force signal.
2, the vibration acceleration signal under the different passage of this acceleration transducer difference multi collect, this rolling parameter measurement mechanism gathers the rolling parameter under different passage.
3, the fluctuation percentage of this vibration acceleration signal root-mean-square value is calculated
wherein x
mthe root-mean-square value of vibration acceleration signal under expression m passage, x
nthe root-mean-square value of vibration acceleration signal under expression n passage, and calculate the fluctuation percentage of this rolling parameter
wherein y
mrepresent the rolling parameter under m passage, y
nrepresent the rolling parameter under n passage, wherein m, n are the integer being greater than zero.
4, the factor of influence of this rolling parameter is calculated
if Φ is >0, then represent that the root-mean-square value of this vibration acceleration signal is comparatively responsive to the fluctuation of this rolling parameter, factor of influence Φ numerical value is larger, and the susceptibility of this rolling parameter is higher; If Φ is <0, then represent that the fluctuation of the root-mean-square value of this vibration acceleration signal to this rolling parameter is insensitive.
5, according to the susceptibility size being arranged on the rolling parameter that the rolling parameter measurement mechanism on milling train diverse location collects, the monitoring measuring point of mill milling parameter as the arrangement of this rolling parameter measurement mechanism, thus is determined in the milling train position selecting the higher mill data of susceptibility corresponding.
Above-mentioned mill milling parameter monitoring measuring point defining method, fast and accurately can determine the monitoring measuring point of other rolling parameters of milling train except vibration acceleration signal, such as mill.
In milling train oscillation mark observation process, roll-force and mill speed, as main rolling parameter, are combined the Vibration Condition that more accurately can reflect milling train with vibration acceleration signal.
A kind of arrangement of mill data measurement mechanism, as shown in figs. 2 to 4, this milling train comprises the first half and the latter half of being oppositely arranged, this the first half and the latter half are all followed successively by working roll system 1 from the inside to the outside, intermediate calender rolls system 2, driven roller system 3 and backing roll system 4, wherein this working roll system 1 comprises a working roll, this intermediate calender rolls system 2 comprises two intermediate calender rolls, this driven roller system 3 comprises two driven rollers and an idler rollers, this backing roll system 4 comprises four backing rolls, four backing rolls of the first half are A from left to right, B, C, D, four backing rolls of the latter half are E from right to left, F, G, H, measurement of rolling force device is arranged on the memorial archway N of the first backing roll D of this first half rightmost side, mill speed measurement mechanism is arranged on the bearing block P on the 5th backing roll E of this latter half rightmost side, wherein the horizontal sextant angle of the line at the center of the first backing roll D of measurement of rolling force device and this first half rightmost side is 37 °, and the horizontal sextant angle of the line at the center of the 5th backing roll E of mill speed measurement mechanism and this latter half rightmost side is 90 °.
In addition, on the memorial archway Q of the first half that this measurement of rolling force device and mill speed measurement mechanism also can be arranged on milling train simultaneously second backing roll B from left to right, to obtain support effect, and the horizontal sextant angle of this measurement of rolling force device, mill speed measurement mechanism and this first half line at the center of second backing roll B is from left to right 90 °.
Through practice demonstration method and apparatus reasonable of the present invention, reconnaissance is carried out at mill according to the application's method, and compare the rolling mill vibration situation of each test point, the results show is consistent with the reconnaissance result of our application method, these aspects carry out monitor the sensitiveness that can vibration signal be provided greatly to monitor, thus obtain good monitoring accuracy, usually more than 20% can be improved, under the prerequisite not affecting rolling mill characteristic and production, realize the online precise monitoring to rolling mill vibration, milling train operation conditions signal is provided, ensure the normal operation of milling train.
The present embodiment is the preferred embodiment of the present invention; those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, these changes, amendment, replacement and modification also should be considered as protection scope of the present invention.
Claims (7)
1. a defining method for mill milling parameter monitoring measuring point, is characterized in that comprising the following steps:
1) degree of will speed up sensor and rolling parameter measurement mechanism are arranged on the diverse location of milling train, wherein this rolling parameter measurement mechanism is other rolling parameters for measuring except this vibration acceleration signal, comprises the parameter of speed or roll-force signal;
2) vibration acceleration signal under the different passage of acceleration transducer difference multi collect, rolling parameter measurement mechanism gathers the rolling parameter under different passage;
3) the fluctuation percentage of vibration acceleration signal root-mean-square value is calculated by the data of above-mentioned collection
wherein x
mthe root-mean-square value of vibration acceleration signal under expression m passage, x
nunder expression n passage, the root-mean-square value of vibration acceleration signal, calculates the fluctuation percentage of rolling parameter simultaneously
wherein y
mrepresent the rolling parameter under m passage, y
nrepresent the rolling parameter under n passage, wherein m, n are the integer being greater than zero;
4) factor of influence of rolling parameter is calculated
if Φ > 0, then represent that the root-mean-square value of this vibration acceleration signal is comparatively responsive to the fluctuation of this rolling parameter, factor of influence Φ numerical value is larger, and the susceptibility of this rolling parameter is higher; If Φ < 0, then represent that the fluctuation of the root-mean-square value of this vibration acceleration signal to this rolling parameter is insensitive;
5) according to the susceptibility size being arranged on the rolling parameter that the rolling parameter measurement mechanism on milling train diverse location collects, the monitoring measuring point of mill milling parameter as the arrangement of this rolling parameter measurement mechanism, thus is determined in the milling train position selecting the higher mill data of susceptibility corresponding.
2. the arrangement of a mill data measurement mechanism, the roller system of milling train is divided into the first half and the latter half of being oppositely arranged, described the first half and the latter half are all disposed with working roll system from the inside to the outside, intermediate calender rolls system, driven roller system and backing roll system, wherein working roll is a working roll, intermediate calender rolls is two intermediate calender rolls, driven roller is two driven rollers and an idler rollers, backing roll is four backing rolls, it is characterized in that: described mill milling parameter monitoring measurement mechanism comprises measurement of rolling force device and mill speed measurement mechanism, measurement of rolling force device is wherein had at least to be arranged on the memorial archway of the first backing roll of the first half rightmost side of roller system of rolling mill, mill speed measurement mechanism is arranged on the bearing block of the 5th backing roll of the latter half rightmost side of roller system of rolling mill.
3. arrangement according to claim 2, it is characterized in that: the horizontal sextant angle of the line at the center of the first backing roll of described measurement of rolling force device and the first half rightmost side is 36 ~ 38 °, the horizontal sextant angle of the line at the center of the 5th backing roll of mill speed measurement mechanism and the latter half rightmost side is 89 ~ 91 °.
4. arrangement according to claim 3, it is characterized in that: the horizontal sextant angle of the line at the center of the first backing roll of described measurement of rolling force device and the first half rightmost side is 37 °, the horizontal sextant angle of the line at the center of the 5th backing roll of mill speed measurement mechanism and the latter half rightmost side is 90 °.
5. arrangement according to claim 2, is characterized in that: on the memorial archway of the first half that described measurement of rolling force device and mill speed measurement mechanism also can be arranged on roller system of rolling mill simultaneously second backing roll from left to right.
6. arrangement according to claim 5, is characterized in that: the horizontal sextant angle of described measurement of rolling force device and mill speed measurement mechanism and the first half line at the center of second backing roll is from left to right 89 ~ 91 °.
7. arrangement according to claim 6, is characterized in that: the horizontal sextant angle of described measurement of rolling force device and mill speed measurement mechanism and the first half line at the center of second backing roll is from left to right 90 °.
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Citations (6)
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|---|---|---|---|---|
| JPH08108205A (en) * | 1994-10-06 | 1996-04-30 | Sumitomo Metal Ind Ltd | Method for detecting chattering of rolling mill |
| JP2004298884A (en) * | 2003-03-28 | 2004-10-28 | Nisshin Steel Co Ltd | Method and device for monitoring variation of thickness in rolling mill |
| JP2007260775A (en) * | 2006-03-01 | 2007-10-11 | Nippon Steel Corp | Method of and device for rolling metal plate |
| CN103071685A (en) * | 2013-01-22 | 2013-05-01 | 重庆大学 | Twenty-high roll mill chatter mark monitoring system and method based on angular domain |
| CN203030641U (en) * | 2012-08-10 | 2013-07-03 | 北京科技大学 | Rolling mill vibration monitoring analytical equipment |
| CN103769425A (en) * | 2012-10-26 | 2014-05-07 | 上海宝钢工业技术服务有限公司 | On-line monitoring method for vibration state of sinking and sizing mill |
-
2014
- 2014-09-18 CN CN201410479176.XA patent/CN105478492B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08108205A (en) * | 1994-10-06 | 1996-04-30 | Sumitomo Metal Ind Ltd | Method for detecting chattering of rolling mill |
| JP2004298884A (en) * | 2003-03-28 | 2004-10-28 | Nisshin Steel Co Ltd | Method and device for monitoring variation of thickness in rolling mill |
| JP2007260775A (en) * | 2006-03-01 | 2007-10-11 | Nippon Steel Corp | Method of and device for rolling metal plate |
| CN203030641U (en) * | 2012-08-10 | 2013-07-03 | 北京科技大学 | Rolling mill vibration monitoring analytical equipment |
| CN103769425A (en) * | 2012-10-26 | 2014-05-07 | 上海宝钢工业技术服务有限公司 | On-line monitoring method for vibration state of sinking and sizing mill |
| CN103071685A (en) * | 2013-01-22 | 2013-05-01 | 重庆大学 | Twenty-high roll mill chatter mark monitoring system and method based on angular domain |
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